For service and parts needs, visit your dealer. You will receive genuine GM parts and GM-trained and supported service people.
Genuine GM parts have one of these marks:

Vehicle Care
California Proposition 65 WarningFloor Carpet Drying
If the carpet or the pad or insulator is wet, use the following criteria for
drying or for replacing the components:
For a 1-piece carpet assembly bonded to a cotton or a fiber padding,
replace the entire assembly
For a 2-piece carpet assembly with a cotton or a fiber padding, replace
...
Rear Suspension Description and Operation
This vehicle has a semi-independent twist-beam rear suspension system
consisting of the following components:
An axle with integral trailing arms
AV shaped twisting cross beam
Two coil springs
Two shock absorbers
Axle Assembly
The axle assembly (1) attaches to the underbody throu ...
Front Side Door Window Replacement
Preliminary Procedure
Position the window approximately half way down in the door.
Remove the water deflector. Refer to Front Side Door Water Deflector
Replacement.
Remove the outer sealing strip. Refer to Front Side Door Window Outer
Sealing Strip Replacement.
Fr ...